Computational Investigation of Local Material Strength and Toughness on Crack Growth
Abstract
Computational simulation of stable crack growth is an important aspect of structural integrity prediction. Modern alloy strength and ductility increase local material fracture toughness but simultaneously complicates stable crack growth predictions. Material modeling, material parameter identification, fracture criterion and numerical crack growth algorithms are issues which must be addressed for robust stable crack growth prediction. In this investigation, a series of finite element simulations were undertaken to investigate two- dimensional Mode I crack growth in a modified compact tension specimen geometry. Two different crack lengths were considered. HY-100 steel parameters, previously characterized for large strain deformation, were utilized. Additional material responses, based on the HY-100 nonlinear response but with different yield strengths and ductilities, were also considered to parametrically assess material effects on crack growth.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 14, 1990
- Accession Number
- ADA223189
Entities
People
- P. Matic
- V. G. Degiorgi
Organizations
- United States Naval Research Laboratory